Adjustable support



Jan. 11, 1944. KARI: 2,339,081

ADJUSTABLE SUPPORT Original Filed April 25, 1941 IN VEN TOR.

bly or other causes.

here.

base 213.

Patented Jan. 11, 1944 UNITED This invention relates to adjustable supporting means and has to do with for a mixing bowl of a machine intended for use in restaurants, hotels and other establishments in the mixing and treatment of comestibles. for a transmission unit 33 suitably mounted therein, on a diaphragm plate 29, and comprising an upper gear housing 34, shown in dotted lines, and a lower gear housing 36, indicated by dot and dash lines, supported from housing 34 for rotation about an axis eccentric thereto. gear housing 36 is provided with an eccentric collar I54 through which extends a rotatably mounted drive'n shaft 38 on which is secured an attaching collar 2H1 provided with means, com- My invention is directed to a support of the character stated slidably mounted on guide means and provided with character to guard against binding of parts. More specifically, I provide guide rods on which l the support is slidably mounted, and an adjusting shaft screwing through a block for adjusting the support, the block having a floating connection to the support effective for preventing binding of parts due to slight inaccuracies in assem- 15 p s ng a locking p n having an Op t handle M4, for securing a beater or other attachment to shaft 38 for rotation therewith and with the lower gear housing 36. The means referred to for securing an attachment to the drivmixing machin with 20 en shaft 33 of the transmission unit is disclosed in detail in my copending application for Securingmeans, Serial No. 430,239, filed February 10, 1942, and need not be further described here. Any suitable means may be provided for that port gmbodying my invention as applied t th t purpose, and it suffices to state that suitable means is provided for securing a beater or other attachment to the driven shaft of the transmission unit, for use in mixing or treating materials in an appropriately disposed mixing bowl.

In order that the bowl may be supported in proper position, I provide vertically adjustable The bowl support is of approximately U shape in plan, and comprises two forwardly and outwardly curved arms 88 of angle cross section, each provided, at its rearward end, with an elongated sleeve 8% slidable on a vertical guide rod 99 suitably secured at its lower end to base 2!! and extending upward therefrom into overhang 23 and through a plate 9! extending across the overhang and secured to the side walls thereof by welding. The sleeves 89 are connected by a web element 92 having an opening receiving a block 93 provided in its sides with grooves 94 which loosely receive corresponding tongues 92c integral with web 92. Block 93 is centrally bored and threaded for reception of a threaded adjust ing shaft 95 screwing through this block and rotatably mounted at its lower end in base 20, shaft 95 being disposed midway between guide rods as in parallel spaced relation thereto. end portion of shaft 95 is reduced and passes through and above a bearing bushing 95 mounted through plate 9 l. Bushing 96 is provided at opposite sides thereof with straight grooves, and guide rods 90 are likewise provided, at their inner sides In the drawing: Figure 1 is a front of a the lower portion of the away and the lower gear mission unit omitted for tion, showing an adjustable mixing bowl supmachine; and

Figure 2 is a fragmentary sectional View, on an enlarged scale, taken 22 of Figure 1, partly broken away.

This application is a division of my copending application for Mixing 390,229, filed April 25, 1941.

The mixing machine with which the adjustable support of my instant invention is particularly intended to be used is disclosed in detail in my above identified copending application, and a brief description of that machine will suffice It comprises a base 20, conveniently in the form of a casting, a column 2| mounted upon and extending upward from base 28, and 4a a head 22 at the upper end of column 2| extending forward therefrom and providing an overhang 23 overlying the forward portion of The column 2! and head 22, including the overhang 23, are formed of plate or sheet 4? steel, the elements thereof er in a suitable manner, preferably by Welding. An upwardly projecting flange 24 is welded to the upper end of head 22, about the periphery thereof, and receives the lower edge portion of a boxi like cover 25, also preferably formed of sheet or plate steel,which thus seats upon the upper end of head 22. Cover 25 is position by two screws 28 and threading into the upper arms of two in- 5 Other objects and advantages of my invention will appear from the detail description.

STATES PATENT OFFICE ADJUSTABLE SUPPORT Edward J. Karp, Cicero, 111., assignor to G. S. Blakeslee & Co., Cicero, 111., a corporation of Illinois Original application April 25, 1941, Serial No. 390,229. Divided and this application July 23, 1942, Serial No. 452,065

2 Claims. (01. 248-425) an adjustable support posite sides thereof.

adjusting means of a head housing broken housing of the transclearness of illustrasubstantially on line machine, Serial No.

bowl supporting means.

being secured togethremovably secured in passing therethrough verted L-shaped brackets 21 welded at their lower portions to the inner surface of head 22 at op- Overhang 23 of head 22 provides a housing The lower The upper and adjacent plate 9|, with straight grooves. Locking plates 91 engage into the grooves of bushing 96 and rods 90 and are'bolted to plate 9! effectively restraining the guide rods and the bushing, together with shaft 95, against endwise move ment. A bevel gear 98 is secured on the upper end of shaft 95 and meshes with a bevel gear 99 secured on a cross shaft I90. Shaft I I!!! is rotatably mounted through a bushing Itl mounted through one side wall of head 22 and restrained against endwise movement by a locking plate H32, in the same manner as bushing 96. A hand wheel )3, provided with a handle I I34, is secured on the outer end of shaft I M with its hub 135 in contact with the outer end of bushing IIH. A stop collar rot is secured on shaft I00 in contact with the inner end of bushing IKH. Shaft It!!! is thus restrained against endwise movement. The other or inner end of shaft I00 is rotatably mounted in a bushing it}? mounted through an angle bracket Its extending between plate 9! and diaphragm plate 29, this bracket I08 being Welded to plates and re, and to the adjacent side wall of head 22. Bushing it? is retained in position by a looking plate 5!!) bolted to bracket I08, in the same in; as bushing HM and bushing 9t.

toll of the arms 88 is provided, at its forward on, with a boss H2 in which is secured an upwardly projecting stud H3 for engagement through a corresponding opening in a plate iii secured to a. band H5 extending about a mixing bowl 3 it. Midway between the plates M an arcuate angle strip I I? is secured to band 1 i5, this strip being provided. with a rounded rib H8. A locking hook H9 extends upward through a slot 52 in flange iZI at the upper edge of and connecting the arms 88, this hook being pivoted at its lower end on a crank I22 of a rod 123 rockably mounted in arms 88 and confined against endwise movement. Rod I23 extends outward beyond one of the arms 83 and has an operating arm (not shown) secured on its outer end. By turning rod I23 in one direction, hook i I 9 is moved downward so as to cause the bill of the hook to engage over rib i 58. That provides means for locking the bowl lit to the support in a manner effectively preventing accidental displacement of the bowl. By

turning rod I23 in the other direction, the bowl may be released for removal and replacement as required. It will be seen that by rotating shaft H30 in proper direction, the bowl I I6 may be raised or lowered as desired so as to be positioned in proper relation to the attachment carried by the driven shaft of the transmission unit 33. The loose tongue and groove connection between block at and the bowl support provides, in effect, a floating connection which accommodates any slight inaccuracy in parts and eliminates possibility of binding. That is of particular advantage in structures formed of sheet or plate metal, in which it is often difiicult to obtain accurate alignment of parts.

Changes in construction and arrangement of parts of my invention may be resorted to, without departing from the field and scope thereof, and I intend to include all such variations, as fall within the scope of the appended claims, in this application in which the preferred form only of my invention is disclosed.

I claim:

In a mixing machine of the type having a driven attachment receiving shaft and a mixing bowl support slidably mounted on. guide rods and .diusted toward and away from the attachment eceiving shaf t by an adjusting screw shaft conagainst endwise movement, a block threaded the adjusting shaft and having loose connecion to the bowl support for adjusting the latter and effective for preventing binding of the bowl support on the guide rods while enabling movement of the biock relative to the bowl support.

2. In a mixing machine of the type having a driven attachment receiving shaft and a mixing bowl support slidably mounted on guide rods and adjusted toward and away from the attachment receiving shaft by an adjusting screw shaft confined against endwise movement, a block threaded on the adjusting shaft and having loose tongue and groove connection. to the bowl support for ad justing the latter and effective for preventing binding of the bowl support on the guide rods while enabling movement of the block relative to the bowl support.

EDWARD J. KARP. 

